全页漂浮的图片的广告代码 -我搜网页特效

var mvtLight="http://www.wosowoso.com/logo.gif"
var mvtWidth=180
var mvtHeight=100
var mvtLink="http://www.wosowoso.com/google/b2/"
var mvtAlt="http://www.wosowoso.com/"

brOK=navigator.javaEnabled()?true:false
ns4=(document.layers)?true:false
ie4=(document.all)?true:false

if(ns4){
document.write('<layer id="mvt" width=40 height=60;"><a href="'+mvtLink+'" target=_blank><img src="'+mvtLight+'" border=0 width="'+mvtWidth+'" height="'+mvtHeight+'" alt="'+mvtAlt+'"><\/a><\/layer>');
}
else{
document.write('<div id="mvt" style="position:absolute; width:40; height:60;"><a href="'+mvtLink+'" target=_blank><img src="'+mvtLight+'" border=0 width="'+mvtWidth+'" height="'+mvtHeight+'" alt="'+mvtAlt+'"><\/a><\/div>');
}

var vmin=2;
var vmax=5;
var vr=2;
var timer1;
function Chip(chipname,width,height)
{this.named=chipname;
 this.vx=vmin+vmax*Math.random();
 this.vy=vmin+vmax*Math.random();
 this.w=width;
 this.h=height;
 this.xx=0;
 this.yy=0;
 this.timer1=null;
}

function movechip(chipname)
{
 if(brOK)
	{eval("chip="+chipname);
	if(ns4)
	{pageX=window.pageXOffset;
		pageW=window.innerWidth;
		pageY=window.pageYOffset;
		pageH=window.innerHeight;
	}
	else
	{pageX=window.document.body.scrollLeft;
		pageW=window.document.body.offsetWidth-8;
		pageY=window.document.body.scrollTop;
		pageH=window.document.body.offsetHeight;
	}

chip.xx=chip.xx+chip.vx;
	chip.yy=chip.yy+chip.vy;

chip.vx+=vr*(Math.random()-0.5);
	chip.vy+=vr*(Math.random()-0.5);
	if(chip.vx>(vmax+vmin))	chip.vx=(vmax+vmin)*2-chip.vx;
	if(chip.vx<(-vmax-vmin)) chip.vx=(-vmax-vmin)*2-chip.vx;
	if(chip.vy>(vmax+vmin))	chip.vy=(vmax+vmin)*2-chip.vy;
	if(chip.vy<(-vmax-vmin)) chip.vy=(-vmax-vmin)*2-chip.vy;

if(chip.xx<=pageX)
		{	chip.xx=pageX;
		chip.vx=vmin+vmax*Math.random();
		}
	if(chip.xx>=pageX+pageW-chip.w)
		{	chip.xx=pageX+pageW-chip.w;
		chip.vx=-vmin-vmax*Math.random();
		}
	if(chip.yy<=pageY)
		{	chip.yy=pageY;
		chip.vy=vmin+vmax*Math.random();
		}
	if(chip.yy>=pageY+pageH-chip.h)
		{	chip.yy=pageY+pageH-chip.h;
		chip.vy=-vmin-vmax*Math.random();
		}

if(ns4){
		eval('document.'+chip.named+'.top ='+chip.yy);
		eval('document.'+chip.named+'.left='+chip.xx);
	}
	else{
		eval('document.all.'+chip.named+'.style.pixelLeft='+chip.xx);
		eval('document.all.'+chip.named+'.style.pixelTop ='+chip.yy);
	}
	chip.timer1=setTimeout("movechip('"+chip.named+"')",100);		//设置速度，数值越大速度越慢
	}
}

function stopme(chipname)
{if(brOK)
	{//alert(chipname)
	eval("chip="+chipname);
	if(chip.timer1!=null)
	{clearTimeout(chip.timer1)}
	}
}

var mvt;
function mvt()
{
	mvt=new Chip("mvt",60,80);
	if(brOK){
		movechip("mvt");
	}
}

window.onload=mvt

//-->
</script>